Features: 100% brand new and high quality Standard Raspberry P header supports Raspberry P senes boards. Incorporates Li-ion battery switching charger with dynamic power path management, more stable power supply. 12c bus communication, monitoring the battery voltage, current, power and remaining capacity in real time. Multi battery protection circuits: over charge/discharge protection, over curent protection, short circuit protection, and reverse protection, Along with the equalizing charge feature, more safe and stable. Onboard recharging indicator, power indicator, and battery warning indicator ta checkin if the battery is connected correctly. Package Includes: 1x Raspberry Pi Expansion Board Specifications: Material: ABS Size: approx. 60x21mm/2.36x0.83in note: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size.